.TH "QwtCompass" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
QwtCompass \- A Compass Widget\&.  

.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_compass\&.h>\fP
.PP
Inherits \fBQwtDial\fP\&.
.SS "Public Member Functions"

.in +1c
.ti -1c
.RI "\fBQwtCompass\fP (QWidget *parent=NULL)"
.br
.RI "Constructor\&. "
.ti -1c
.RI "virtual \fB~QwtCompass\fP ()"
.br
.RI "Destructor\&. "
.ti -1c
.RI "void \fBsetRose\fP (\fBQwtCompassRose\fP *\fBrose\fP)"
.br
.ti -1c
.RI "const \fBQwtCompassRose\fP * \fBrose\fP () const"
.br
.ti -1c
.RI "\fBQwtCompassRose\fP * \fBrose\fP ()"
.br
.in -1c
.SS "Protected Member Functions"

.in +1c
.ti -1c
.RI "virtual void \fBdrawRose\fP (QPainter *, const QPointF &center, double radius, double north, QPalette::ColorGroup) const"
.br
.ti -1c
.RI "virtual void \fBdrawScaleContents\fP (QPainter *, const QPointF &center, double radius) const override"
.br
.ti -1c
.RI "virtual void \fBkeyPressEvent\fP (QKeyEvent *) override"
.br
.in -1c
.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP 
A Compass Widget\&. 

\fBQwtCompass\fP is a widget to display and enter directions\&. It consists of a scale, an optional needle and rose\&.
.PP
.PP
\fBNote\fP
.RS 4
The examples/dials example shows how to use \fBQwtCompass\fP\&. 
.RE
.PP

.PP
Definition at line 61 of file qwt_compass\&.h\&.
.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtCompass::QwtCompass (QWidget * parent = \fCNULL\fP)\fC [explicit]\fP"

.PP
Constructor\&. 
.PP
\fBParameters\fP
.RS 4
\fIparent\fP Parent widget
.RE
.PP
Create a compass widget with a scale, no needle and no rose\&. The default origin is 270\&.0 with no valid value\&. It accepts mouse and keyboard inputs and has no step size\&. The default mode is \fBQwtDial::RotateNeedle\fP\&. 
.PP
Definition at line 158 of file qwt_compass\&.cpp\&.
.SH "Member Function Documentation"
.PP 
.SS "void QwtCompass::drawRose (QPainter * painter, const QPointF & center, double radius, double north, QPalette::ColorGroup cg) const\fC [protected]\fP, \fC [virtual]\fP"
Draw the compass rose
.PP
\fBParameters\fP
.RS 4
\fIpainter\fP Painter 
.br
\fIcenter\fP Center of the compass 
.br
\fIradius\fP of the circle, where to paint the rose 
.br
\fInorth\fP Direction pointing north, in degrees counter clockwise 
.br
\fIcg\fP Color group 
.RE
.PP

.PP
Definition at line 218 of file qwt_compass\&.cpp\&.
.SS "void QwtCompass::drawScaleContents (QPainter * painter, const QPointF & center, double radius) const\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
Draw the contents of the scale
.PP
\fBParameters\fP
.RS 4
\fIpainter\fP Painter 
.br
\fIcenter\fP Center of the content circle 
.br
\fIradius\fP Radius of the content circle 
.RE
.PP

.PP
Reimplemented from \fBQwtDial\fP\&.
.PP
Definition at line 189 of file qwt_compass\&.cpp\&.
.SS "void QwtCompass::keyPressEvent (QKeyEvent * kev)\fC [override]\fP, \fC [protected]\fP, \fC [virtual]\fP"
Handles key events
.PP
Beside the keys described in \fBQwtDial::keyPressEvent\fP numbers from 1-9 (without 5) set the direction according to their position on the num pad\&.
.PP
\fBSee also\fP
.RS 4
\fBisReadOnly()\fP 
.RE
.PP

.PP
Reimplemented from \fBQwtAbstractSlider\fP\&.
.PP
Definition at line 271 of file qwt_compass\&.cpp\&.
.SS "\fBQwtCompassRose\fP * QwtCompass::rose ()"

.PP
\fBReturns\fP
.RS 4
rose 
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetRose()\fP 
.RE
.PP

.PP
Definition at line 257 of file qwt_compass\&.cpp\&.
.SS "const \fBQwtCompassRose\fP * QwtCompass::rose () const"

.PP
\fBReturns\fP
.RS 4
rose 
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetRose()\fP 
.RE
.PP

.PP
Definition at line 248 of file qwt_compass\&.cpp\&.
.SS "void QwtCompass::setRose (\fBQwtCompassRose\fP * rose)"
Set a rose for the compass 
.PP
\fBParameters\fP
.RS 4
\fIrose\fP Compass rose 
.RE
.PP
\fBWarning\fP
.RS 4
The rose will be deleted, when a different rose is set or in ~QwtCompass 
.RE
.PP
\fBSee also\fP
.RS 4
\fBrose()\fP 
.RE
.PP

.PP
Definition at line 232 of file qwt_compass\&.cpp\&.

.SH "Author"
.PP 
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.
